大兴安岭乌奴耳地区构造混杂岩的组成及地质意义  

COMPOSITIONS OF TECTONIC MELANGE IN WUNUER AREA,DAXINGANLING MOUNTAINS:Geological Implication

作　　者：李利阳 白志达[2] 伍光英[1] 侯红星 韩瑶 刘博 LI Li-yang;BAI Zhi-da;WU Guang-ying;HOU Hong-xing;HAN Yao;LIU Bo(Langfang Natural Resources Comprehensive Survey Center,CGS,Langfang 065000,Hebei Province,China;China University of Geosciences,Beijing 100086,China;Shandong Geological Environmental Monitoring Station,Jinan 250014,China)

机构地区：[1]中国地质调查局廊坊自然资源综合调查中心,河北廊坊065000 [2]中国地质大学地球科学与资源学院,北京100086 [3]山东省地质环境监测总站,山东济南250014

出　　处：《地质与资源》2023年第6期664-669,698,共7页Geology and Resources

基　　金：中国地质调查局项目“内蒙古高吉山林场、哈拉沟幅1∶5万区域地质矿产调查”(DD2016007808);“内蒙古化德-河北康保德包图等4幅1∶5万区域地质调查”(DD20208003).

摘　　要：乌奴耳构造混杂岩由不同性质的岩块和基质组成,属泥沙质构造混杂岩.岩块可分为内部岩块和外部岩块两种类型.岩块大小不一,成分和形态各异,在混杂岩中分布无序.基质为片理化泥质岩或千枚状板岩,剪切变形强烈,面理产状紊乱,绕岩块分布.综合研究表明,乌奴耳构造混杂岩明显区别于沉积成因的滑塌堆积,是典型的泥沙质构造混杂岩,是新林-喜桂图缝合带的重要组成部分.The Wunuer tectonic melange is composed of rock blocks and matrixes with different properties,belonging to sandy tectonic melange.The blocks can be sorted into local blocks and exotic blocks,which are various in size,composition and shape,disorderly distributed in the melange.The matrix is foliated argillaceous rock or phyllite slate,with intense shear deformation and disordered schistosity,distributed around the blocks.The comprehensive study shows that the Wunuer tectonic melange,obviously different from the slump deposit of sedimentary origin,is a typical sandy tectonic melange,serving as an important part of Xinlin-Xiguitu suture zone.

关 键 词：构造混杂岩 构造变形 新林-喜桂图缝合带 大兴安岭 

分 类 号：P313[天文地球—固体地球物理学]